LTC1346A_15 Datasheet, PDF (1/12 Pages) Linear Technology – 10Mbps DCE/DTE V.35 Transceiver

FEATURES
■ _{Single Chip Provides Complete Differential Signal}
Interface for V.35 Port
■ _{Drivers and Receivers Will Withstand Repeated}
±10kV ESD Pulses
■ _{Operates from ±5V Supplies}
■ _{10Mbaud Transmission Rate}
■ _{Meets CCITT V.35 Specification}
■ _{Shutdown Mode Reduces ICC to Below 1µA}
■ _{Selectable Transmitter and Receiver Configurations}
■ _{Independent Driver/Receiver Enables}
■ _{Transmitter Maintains High Impedance When}
Disabled, Shut Down or with Power Off
■ _{Transmitters Are Short-Circuit Protected}
U
APPLICATIO S
■ _Modems
■ _{Telecommunications}
■ _{Data Routers}
LTC1346A
10Mbps DCE/DTE
V.35 Transceiver
DESCRIPTIO
The LTC^®1346A is a single chip transceiver that provides
the differential clock and data signals for a V.35 interface
from ±5V supplies. Combined with an external resistor
termination network and an LT^®1134A RS232 transceiver
for the control signals, the LTC1346A forms a complete low
power DTE or DCE V.35 interface port.
The LTC1346A features three current output differential
transmitters and three differential receivers. The transceiver
can be configured for DTE or DCE operation or shutdown
using three Select pins. In the Shutdown mode, the supply
current is reduced to below 1µA.
The LTC1346A transceiver operates up to 10Mbaud. All
transmitters feature short-circuit protection. Both the
transmitter outputs and the receiver outputs can be forced
into a high impedance state. The transmitter outputs and
receiver inputs feature ±10kV ESD protection.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Clock and Data Signals for V.35 Interface
V_EE1
–5V ₊
0.1mF
1
V_CC1
5V ₊
2
0.1mF
4
5
9
10
11
7
8
V_CC1
LTC1346A
DX
DX
RX
RX
RX
12
DTE
BI
627T500/1250
24 1
23 2
T
22 3
21 4
T
18 14
17 13
T
16 12
15 11
T
14 10
13 9
T
3
87
TXD (103)
SCTE (113)
TXC (114)
RXC (115)
RXD (104)
GND (102)
DCE
BI
627T500/1250
12 16
T
11 15
10 14
T
9 13
1 24
T
2 23
3 22
T
4 21
5 20
T
6 19
8
7
3
1
2
LTC1346A
V_CC2
5V
0.1mF
10
RX
V_EE2
0.1mF ^–5V
11
RX
4
DX
5
DX
6
DX
50W _125W
T=
7 _VCC2
50W
8
12
BI TECHNOLOGIES
627T500/1250 (SOIC)
LTC1346 • TA01
1346afa
1